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Finding the Fourth Proportional to 468,843.20, 647,005.32 and 253,982.76

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Solution

The fourth proportional to 468,843.20, 647,005.32 and 253,982.76 is: 350,497.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,843.20 : 647,005.32 = 253,982.76 : x
  2. Step 2: Convert to fraction form
    468,843.20/647,005.32 = 253,982.76/x
  3. Step 3: Cross multiply
    468,843.20x = 647,005.32 × 253,982.76
  4. Step 4: Simplify right side
    468,843.20x = 164,328,196,908.28
  5. Step 5: Solve for x
    x = 164,328,196,908.28/468,843.20
  6. Step 6: Final answer
    x = 350,497.13

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.